RFR: 8285976: compiler/exceptions/OptimizeImplicitExceptions.java can't pass with -XX:+DeoptimizeALot

[Volker Simonis]

On Tue, 3 May 2022 01:20:48 GMT, Xin Liu <xliu at openjdk.org> wrote:

> Disable DeoptimizeALot and DeoptimizeRandom, 2 develop options when run this test for stability.

test/hotspot/jtreg/compiler/exceptions/OptimizeImplicitExceptions.java line 200:

> 198:         // The following options are both develop, getBooleanVMFlag() returns NULL in product build.
> 199:         // If they are set in debug build, disable them for more test stability.
> 200:         if (WB.getBooleanVMFlag("DeoptimizeALot")) {

If this really returns NULL in a product build, wont this cause an exception then?

Wouldn't it be easier to just unconditionally set them both to false:

WB.setBooleanVMFlag("DeoptimizeALot", false);
WB.setBooleanVMFlag("DeoptimizeRandom", false);

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PR: https://git.openjdk.java.net/jdk/pull/8513